Photoshop: Live tools feedback

It would be great for speed of workflow and ease of use if all tools inside Photoshop updated live as the user uses a slider, changes color, alters a value etc.

For example when altering text size/color/kerning etc you have to let the mouse button to see the result on the text instead of updating as you move the sliders. (Especially for text, there is live update on the size/kerning for example but you have to select the text with the text tool in order to work).

I think processing power is enough nowadays to allow such interaction, plus the feature could be disabled in preferences for slower computers.

This could also apply in all the suite's applications. It would be a great time-saver and make the apps come alive!